Improvement in compounds for uniting steel and iron



UNITED STATES PATENT FFlCE.

BOYD o. LEAVITT, or NEWPORT, Mama, ASSIGNOR T0 os. s. BISHOP AND RD. E. LIBBEY.

I IMPROVEMENT IN COMPOUNDS FOR uun'me. STEEL AND IRON.

Specification forming part of Letters Patent No. 9,l59, dated July 27, 1852.

'matterand mode of applying the same so as to cause the adhesion of cast-steel, steel of other kinds, wrought-iron, and cast-iron with cast-iron and form a perfect and permanent union of the two metals as indissolublyas if they were one solid piece; and I do hereby and (after putting itin any convenient vessel) submit the same to the action of heat gradfully and sutficiently so far as may be necessary to evaporate all the moisture contained in the crude borax and reduce it to a perfectly calcined state. Then let the calcined borax gradually attain a red heat. After this is accomplished let it cool, and when cold add of the carbonate of ammonia in weight to the calcined borax one-eighth of the weight of the borax in its crude state, and then pulverize the composition or mixture into a fine powder, so as to be well and uniformly mixed.

The cast-steel, steel of other kinds, wrough t-' t iron, or cast-iron to be united with the castironmust he placed in the mold or arranged properly, and as desired to suit eacheircuin stance, in the flask orother approved manner of receiving the casting, first polish that part of the cast'steel or steel of other kinds, wrought-iron, or cast-iron to be united to the cast-iron. When all is arranged ready to rece'ive the molten iron, then sift over the brightened parts as much of the amalgam or compound powdras will cover the same. Pour on the molten iron either immediately, or you can do so at any time within twelve hours, and the adhesion of the two metals will be'perl'ect and indissoluble.

I wish it understood I do not claim the use of crude borax, either pulverized or not, for the union of metal, as this has been used for the purpose by others; but it does not insure a perfect union and cannot be relied upon with' any degree of ccrtainty,and great-loss of time and materials often occur, well as a ready separation of the two, even after a seeming union and the particular work seems complete and ready for the use intended but That i do claim as my invention or discovery, and desire to secure by Letters Patent, IS- I The mode and manner of calcining and preparing the crude borax and compounding the same afterward withthe carbonate of ammonia, and in the proportions above set forth and described, and the mode of applying or using it or any other substantially the. same, and which will produce the intended ett'ect. v

ll. (1- LEAVIT'I.

Witnesses I. H. Pe'rnns, J. CONNELY. 

